Patent GB-885094-A (GB)
Title: Improvements in or relating to shoe upper conforming machines
IPC: A43D21/12
Filed: 1958-03-31
Abstract: 885,094. Shoe upper conforming machines. BRITISH UNITED SHOE MACHINERY CO. Ltd. March 31, 1958 [April 1, 1957], No. 10185/58. Class 17(1) A shoe upper conforming machine comprising wipers 20 to wipe toe portions of the upper inwardly, and means for automatically applying a length of binder to secure the wiped margins, including means for tensioning the binder and means 32 for attaching it to the upper by inserting fasteners adjacent the ends of the binder, has the following additional features. (1) The fastener inserting means is associated with means for severing the binder at locations closely adjacent the fastener. (2) The tensioning means includes at each side a gripper 30 movable lengthwise of the shoe, with a jaw portion movable towards and from the shoe and normally urged outwardly by spring means. (3) The grippers are movable inwardly towards the shoe as they pull the binder, the fastener-inserting means comprises a guiding portion to engage the binder before the fastener is inserted, and the grippers are urged outwardly while the binder is thus engaged. The machine is generally similar to that described in Specification 692,126, having wipers which wipe upwardly then inwardly, press downwardly on the upper, retract slightly, and then press downwardly again, binder applying means, and means for securing the binder comprising inside and outside formers 142, 143 (not shown) operated by toggles 150, 152, which form a staple from wire W, and a driver 146 which is normally latched but is released by the straightening of toggles 150, 152 and then operated by toggles 262, 264 to drive the staple through throat 148. The fastener inserting mechanisms are adjustable widthwise and lengthwise of the shoe. The binder positioning fingers also operate similarly except that the throat member 148 itself engages the binder and forces it against the side of the shoe. Toggles 150, 152 and 262, 264 are operated by a single fluid operated piston 300, the rod 310 of which carries a pinion 318 which engages teeth on plungers 324, 326 connected to the toggles. As toggle 150, 152 straightens, latch 280 (not shown) releases the driver slide 254, but, by engaging with hole 284 in frame 40, arrests plunger 324 while plunger 326 operates toggle 262, 264 to drive the staple. During the final straightening of toggle 262, 264, and while the binder is held by throat 148 and fingers 182, 184, an abutment 402 on link 262 moves pin 234 upwardly, swinging spring lever 228 to depress spring plunger 222 which depresses knife 212, against spring 216, to sever the binder closely adjacent the fastener. When toggle 262, 264 is fully straightened pressure builds up in cylinder 304, whereupon the control valve (not shown) reverses the flow, and piston 300, returning, returns the fastener inserting mechanism, and another portion of wire W is fed. Such feed is facilitated by the control of the movement of frame 40 by guide member 122 which includes a slidable bar 126 connected to frame 40 and engaged by a friction block 132. A binder applying gripper 30 at each side of the machine is moved lengthwise to pull the binder by rods 502 as in Specification 692,126. Each gripper comprising toothed jaws 522, 524, urged apart by spring 526 to enable binder B to be fed, is pivoted to a carrier 532 supported by links 534, 536, and is urged yieldingly outwardly by spring 552 acting via plunger 546, arm 544, and link 536, but may move inwardly, against spring 552, as it pulls the binder. During upward movement of the wiper carrier 22 the binder is fed and then cut by knife 582, and the gripper operating cam 560 (not shown) moves the outer jaw to grip the binder. Just after the staple has been driven, lever 618 is rotated and projects the gripper release blade 606 which rotates cam 560 (not shown) to separate the gripper jaws. Gripper locating fingers 630 act similarly to those in Specification 692,126. When the grippers are moved to tension the upper they are released from fingers 630 for upward movement by springs 632 (not shown) and inward movement, against springs 552, in response to the pull of the binder, fluid in cylinders 548 (not shown), which house the ends of rods 546, exhausting to conduit 382. The toggle effect of the binder and links 534, 536 positions the grippers slightly outwardly of the shoe, and the ends of the binder are correctly positioned for reception between the anvil and the throat member. Just after piston 300 commences to move downwardly fluid entering cylinders 548 (not shown) move rods 546 downwardly and grippers 30 outwardly. The timing is such that this movement occurs after fingers 182, 184 and throat 148 engage the shoe, and results in the end portions of the binder being bent outwardly. Specification 610,861 is referred to.